Observation and experiments
A good acronym to remember when evaluating source information is: Currency, Relevance, Authority, Accuracy, and Purpose (CRAAP).
Also, I found another one:
Claim, Role of the claimant, Information backing the claim, Testing, Independent Verification, Conclusion. (CRITIC)
Fun facts.
If you find a machine which goes in a speed of 3×10^8 m/sec, you can see the past and future. You can even travel for longer distant objects like stars
I feel that the UN requires more representatives from all walks of life and also those from different economic situations
This will help in the generation of more ideas therefore more problems will have a soloution